Road-scraper.



A. T. NEWELL.

ROAD SGRAPER. APPLIOATIOH FILED JAN.7, 1910. RENEWED AUG. 24, 1912.

1,056,930. Patented Mar. 25, 1913.

4 SHBETSSHBET l.

l u u H II A. T. NBWELL.

ROAD SGRAPBR. APPLICATION FILED JAN.7, 1910. RENEWED AUG. 24, 1912. 1,056,930. Patented Mar.25, 1913.

4 SHEETSSHEET 2.

attorney 'A. T. NEWELL.

ROAD SURAPER. APPLIUATION. FILED JAN. '7, 1910. RENEWED AUG. 24.1912.

' wmm COLUMBIA PLANOGRAPH (30.. wAsHlNa'ruN, D. C-

A. T. NEWELL.

I ROAD SGRAPER, APPLICATION FILED JAN. 7, 1910. RENEWED AUG. 24, 1912.

1 56,930. Patented Mar. 25, 1913.

' 4 SHEETS-BEBE! 4.

iii

0 T/kwa/L Gimme/1g ALFRED TURENNE NEWELL, 0F BIRMINGHAM, ALABAMA.

ROAD-SGRAPER.

Specification of Letters Patent.

Patented Mar. 25, 1913.

Application filed January 7, 1910, Serial No. 536,932. Renewed August24, 1912. Serial No. 716,881.

To all whom it may concern:

Be it known that I, ALFRED T. NEWELL, a citizen of the United States,residing at Birmingham, in the county of J efferson and State ofAlabama, have invented certain new and useful Improvements in Road-Scrapers, of which the following is a specification.

This invention is adapted and intended capable of other uses if desired.

The object of the invention is to provide an improved road grader acharacteristic feature ofwhich is that it can be operated in eitherdirection without being turned around, the machine being provided with apair of blades which can be turned around to work in either direction,or which can be set at different angles so as to work both sides of theroad at once.

Each blade is carried by an annulus which can be turned to vary theangle of the blade. Also the machine is mounted upon steering wheels atfront and rear, and so can be guided, independent of motive power, toact in the exact position required. The ends of the machine can besteered independently at the same time, and the rear wheels set at anangle to the line of draft so as to avoid side pressure.

Improved means for transmitting a direct draft to the blades areprovided, avoiding the use of a bent frame and applying the power moredirectly to the work.

In addition to the angular movement in a horizontal plane, improvedmeans are provided for tilting the blades in a vertical plane, to givedesired slope or contour to the road. The blades can also be raised orlowered vertically, and put out of action.

The machine is capable of operation with any desired draft power, suchas traction engines, cables from distant power, or draft animals.

Various other advantages will be apparent from the following descriptionand the accompanying drawings.

In the drawings, Figure l is a plan view of the machine, parts beingremovd for the sake of clearness. Fig. 2 is a side elevation. Fig. 3 isan end elevation, the draft rigging being removed. Fig. 4 is a plan indetail of part of the steering devices. Fig. 5 is a detail in section ofa draft block and joint connections with one of the bolsters. Fig.

a scraper particularly for grading roads, but- 6 is a detail in plan ofpart of the turntable which supports the blade, showing the means fortilting the same vertically. Fig. 7 is a detail in vertical crosssection of one of the turn-tables or blade carriers.

Referring specifically to the drawings, F is the main or platform frameconveniently made of I-beams or other structural metal, and suitable tosupport the parts hereinafter mentioned. It is rectangular in shape, asshown, but may be varied in any manner not inconsistent with itsfunctions. It is mounted at opposite ends, by means of pedestals 6, uponfixed bolsters 7, to which are attached the steering wheels H, thearrangement at both ends being the same, so that steering may beeffected at one or bot-h ends.

The connection between the wheels and the bolsters may be madeby anysuitable devices. I have illustrated knuckles I, pivoted to the ends ofthe bolsters and provided with journals on which the wheels turn.Suitable means to swing the knuckles are provided, comprising, asillustrated, a transverse rack bar 8 connected toarms 9 on the knucklesand shifted by means of a vertical shaft 10 provided with a pinion'llmeshing with the rack. At the upper end the shaft has a bevel pinion l2meshing with the pinion 13 carried by a horizontal shaft 14 whichextends lengthwise of the machine and has hand wheels A thereon, forconvenience of operation by an operator at either the end or the middlepart of the frame. These shafts are suitably mounted on supports 15 onthe main frame. The devices described are duplicated as shown, foroperation of both pairs of steering wheels. It is within the scope ofthe invention to substitute other suitable steering devices.

The machine carries twin blades arranged respectively on opposite sidesof the middle longitudinal line of the machine. The blades and theirmountings, and the means for adjusting the same, are duplicates, and adescription of one will answer for both. Each blade E is connected byarms 16 to an annular carrier or turn-table N, which turns about a pivotpin 17 at the center thereof, said pin depending from a circular plate18, the carrier N, being relatively rotatable, and the plate 18 beingrelatively fixed, the flange of the latter fitting against the flange 19of the turn-table, to strengthen and steady the same and take some ofthe strain ofi the pivot pin. The flange 19 of the turntable has aninternal gear 20 with which meshes a pinion 21 on a shaft 22 having ahand wheel C, said shaft extending through a bearing in the plate 18. Bythis means the blade carrier may be turned, and it may be locked at anydesired angle by appropriate means, such as a latch 23 and notched wheel24, to hold the turn-table as set. The turn-table and associated partsjust described are carried by a flexible draft frame which extendsbetween the bolsters. Said frame consists of a pair of parallel beams Mwhich are fastened to the plate 18 so as to be rigid therewith, and saidbars are united at opposite ends to yokes or Y-shaped bars M and M theconnection between the parallel bars M and the branches of the yokesbeing made by means of long pivot bolts Gr. By reason of the flexibleconnections at G the blade carriers may be raised and lowered, suchaction being accompanied by slight longitudinal movement of the yokes,permitted by means to be described. Also the yokes and frame may betilted laterally on a horizontal longitudinal axis to raise or lowereither end of the blade, this action being also permitted by means to bedescribed.

To raise the blade carrier, or to tilt the same as indicated, 1 providea pair of long vertical screw rods 25, carried by supports 26 on themain frame and provided with hand wheels B at the top. These screws arelocated at diametrically opposite points on a transverse line across theturn-table. Each screw is connected to the turn-table by means of aswiveling nut 27 (see Fig. 6) which has opposite pins 28 which slide ingrooves 29 in opposite jaws 30 projecting from the plate 18 at theperiphery thereof. This sliding and swiveling connection is formed toaccommodate the lateral variation incident to tilt of the turn-tabletable. It is evident that by rotating both screws the same way (if thethreads are in the same direction) the turn-table and parts connectedthereto will be raised or lowered as a whole. If one screw is turned oneway and the other the other way, one side of the turnrtable will beraised and the other lowered, and the blade accordingly, thereby varyingthe vertical angle of the blade with respect to the road.

In order to permit the adjustments of the blade as above described thestems of the yokes are connected to the respective bolsters by a pivotaland swiveling connection shown particularly in Fig. 5. Each stem M or Mterminates in a circular rod 31 which extends through a block K insetbetween the bolster 7 and a cross beam 82 extending between thepedestals 6, the block being rigidly fixed to the bolster and beam. Thisblock has a flaring bore 38 through which I the rod 31 extends, and saidrod is provided with blocks L having segmental faces and bearing againstopposite ends of the draft block K. The outside head L may slide on therod 31, and bears against a spring J held by a nut and washer 35 on theend of the rod 31. This construction permits the stems of the yokes toturn in the blocks K, as when the blade is tilted, the blocks at thefront and rear bolsters being in line with each other. It also permitsthe yokes to yield inwardly when the blade is raised by means of thewheels B, the springs J being compressed by this action to permit thelongitudinal movement of the yokes; and furthermore, the thrust of theblade is transmitted through the springs to the draft blocks K and thebolsters, thereby easing the pressure of the blade. The swingingmovement of the stems of the yokes is permitted by the enlarged bores 33in the draft blocks.

A tongue D or other suitable draft device is attached to each bolster bydraft irons 10 or the like. ably be attached to the end of each bladeand connected to a fixed part of the machine, to assist in holding theblade at the angle desired, and the chains can be taken up or let outaccording to the angle of the blades.

The length of the blades is preferably such that their inner ends lapeach other in the line of draft, as shown in Fig. 1, formingsubstantially a continuous scraper from one side of the machine to theother. They may be set at the same angle as shown, or one blade may beset one way and the other at the opposite inclination. The latterarrangement will be desirable in ridging up a road in the middle, theblades throwing toward each other. lVhen set at similar angles one bladedelivers to the other. By reason of the turntables on which they aremounted they may be turned entirely around or reversed, whereby themachine can be pulled in opposite directions back and forth. Thesteering devices are independent of the draft devices, which isadvantageous in applying the machine to local conditions. When themachine is being transported the blades can be raised clear of the road.For narrow work one blade can be used with the other idle. Also oneblade can be set at a considerable angle to gather from a ditch at theside of the road, and the other set substantially crosswise to act as aspreader at the crown of the road.

The scope of the invention is not limited to the exact constructionshown and described, nor to the particular uses referred to. The bladeholding and adjusting devices are capable of application to a singlebladed machine, as well as to a double bladed one, and various othermodifications may be made within the scope of the appended claims.

A chain 0 will prefer- What I claim as new is 1. The combination of awheeled main frame provided with bolsters rigid there with and at bothends thereof, blocks fixed to the bolsters, a draft frame extendinglengthwise under the main frame and between the bolsters, said draftframe having yokes at opposite ends with pivot stems extending throughsaid blocks to turn therein, spring supported heads on the stems,bearing against the blocks to allow limited longitudinal yieldingmovement of the draft frame, a blade carrier attached to the draftframe, and suspension devices between the main frame and the carrier.

2. The combination of a wheeled main frame including bolsters at bothends thereof, a draft frame extending lengthwise under said main frameand comprising middle beams, and end yokes the branches of which areconnected to the middle beams by transverse pivots and the stems ofwhich have swiveling and yielding connections to the bolsters, a bladecarrier attached to said middle beams, and adjustable suspension devicesbetween the main frame and the carrier.

3. The combination of a wheeled main frame, a blade support supportedunder said frame and having grooved jaws at opposite sides thereof,screw rods depending from the main frame, and nuts on the rods, havingpivot pins projecting into said grooves.

4;. The combination in a wheeled scraper, of a flanged circular platesupported by the frame of the machine, a turn-table pivoted to saidplate and provided with a circular peripheral flange, against which theflange of the plate fits, and an internal gear on said flange, a shaftextending through the plate, a pinion thereon meshing with said gear,and a scraping blade carried by said turn-table.

5. The combination of a wheeled frame, a pair of cooperating reversiblescrapers carried thereby, and arranged to deliver from one to the otherin either direction of draft, draft means at opposite ends of the frame,whereby it may be drawn in opposite directions, and steering means atopposite ends of the frame.

6. The combination of a frame, a pair of cooperating reversible scraperscarried by the frame and arranged to deliver from one to the other ineither direction of draft,

steering wheels at opposite ends of the frame, draft devices at oppositeends of the frame, and means independent of the draft devices to operatesaid wheels for steering.

7. The combination of a wheeled frame symmetrically constructed atopposite ends, and a pair of cooperating reversible scraping bladescarried by the frame, side by side on vertical pivots, for operation ineither direction, and adjustable on said pivots to deliver from oneblade to the other when desired.

8. The combination of a wheeled scraper frame symmetrically constructedat opposite ends, a pair of cooperating reversible scraping bladescarried thereby, and located side by side and adjustable to deliver fromor to each other, steering wheels at opposite ends of the frame, anddraft connections at opposite ends of the frame.

9. The combination of a wheeled scraper frame, and a pair of reversibleindependntly adjust-able cooperating scraper blades symmetricallyarranged at opposite sides of the frame respectively, one blade beinglocated in advance of the other to deliver material thereto.

10. The combination of a wheeled scraper frame symmetrically constructedat opposite ends for draft in either direction, and a pair of reversibleindependently adjustable cooperating scraper blades carried at oppositesides of the frame respectively and adjustable to deliver from one tothe other in either direction of draft.

11. The combination of a wheeled main frame, a pair of draft framesextending lengthwise beside each other under the frame at opposite sidesthereof, rotatable blade carriers secured to said draft frames, bladesconnected to said carriers respectively and rotatable therewith to actin either direction of draft and located adjacent to each other todeliver to each other, and adjustable to vary their angles with respectto each other and to the line of draft, and suspension devices betweenthe main frame and the carriers, adjustable to vary the vertical anglesof the respective blades.

12. The combination of a wheeled main frame, a pair of reversiblescraping blades suspended side by side thereunder with one bladeadjacent the rear end of the other to receive material therefrom ineither direction of draft, and means to set the blades at various angleswith respect to each other.

In testimony whereof, I aflix my signature in presence of two witnesses.

ALFRED TURENN E N EWELL.

Witnesses:

Mrs. B. L. WHITE, E. L. PENRUDDOCKE.

copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, D. G."

